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What's the difference between the build and create methods in FactoryGirl?
...es not persist to the db and does not call save!, so your Active Record validations will not run. This is much faster, but validations might be important.
Using FactoryGirl.create(:factory_name) will persist to the db and will call Active Record validations. This is obviously slower but can catch v...
Android 4.3 Bluetooth Low Energy unstable
... on the Nexus 4). After getting started with the official BLE APIs in Android 4.3, I have noticed that after I connect a device for the first time I am rarely able to successfully connect to / communicate with that device or any other device again.
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How can I extend typed Arrays in Swift?
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Why you didn't use Iterator.Element in return type [Iterator.Element]?
– gaussblurinc
Oct 1 '16 at 19:22
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#1071 - Specified key was too long; max key length is 1000 bytes
...lumn as you define the index. For example:
...
KEY `index` (`parent_menu_id`,`menu_link`(50),`plugin`(50),`alias`(50))
...
But what's the best prefix length for a given column? Here's a method to find out:
SELECT
ROUND(SUM(LENGTH(`menu_link`)<10)*100/COUNT(`menu_link`),2) AS pct_length_10,...
How do I find out if first character of a string is a number?
... does not have this problem.
To make the entire condition one line and avoid length checks, you can alter the regexes to the following:
s.matches("\\d.*")
// or the equivalent
s.matches("[0-9].*")
If the condition does not appear in a tight loop in your program, the small performance hit for usi...
How does View Controller Containment work in iOS 5?
...iewController docs are pretty clear on when and when not to call willMove/didMove methods. Check out the "Implementing a Container View Controller" documentation.
The docs say, that if you do not override addChildViewController, you do not have to call willMoveToParentViewController: method. H...
Find a Pull Request on Github where a commit was originally created
...commit hash like you mentioned, [github.com/wso2/carbon-kernel/… it provide me two Pull request both has merged the same commit to the master. In such kind of scenario what we should select as the Pull request that merged the relevant commit
– Kasun Siyambalapitiya
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Guards vs. if-then-else vs. cases in Haskell
...m a technical standpoint, all three versions are equivalent.
That being said, my rule of thumb for styles is that if you can read it as if it was English (read | as "when", | otherwise as "otherwise" and = as "is" or "be"), you're probably doing something right.
if..then..else is for when you have...
How do I see the current encoding of a file in Sublime Text?
... Why isn't this enabled by default... +1
– Daniel Lidström
Apr 16 at 11:08
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Removing elements by class name?
... if you care about cross-browser compatibility:
Get container element by ID.
Get needed child elements by tag name.
Iterate over children, test for matching className property.
elements[i].parentNode.removeChild(elements[i]) like the other guys said.
Quick example:
var cells = document.getEleme...